Brake shoe or drum



BRAKE SHOE OR DRUM Filed Dec. l2, 192i Patented Feb. 5, 1924.

UNITED STATES PATENT f OFFICE.

SAMUEL B. LEITZELL, F BUTLER, PENNSYLVANIA.

BRAKE snor: on DRUM.

Application tiled December 12, 1921. Serial No. 521.796.

To all whom it my comm:

Be it known that I, SAMUEL B. Lnrrznm., a citizen of the United States, residing at Butler, in the county of Butler and State of Pennsylvania, have invented a new and useful Brake Shoe or Drum, of which the following yis a specification.

This invention relates to brake constructions, the primary object of the invention l0 being to provide a novel form of brake shoe which will insure a positive operation of the elements thereof.

Another object of the invention is to provide a sectional brake shoe, wherein the same l may be readil and easily removed and replaced, shoul the same become worn or otherwise rendered inoperative. Y A still further object of the invention is to provide a brake construction possessing the maximum amount of gripping qualities, and one wherein the elements thereof will be exaptionally long lived.

ith the foregoing and other objects in view which will rap ar asy the description roceeds, the invention resides in the com' mation and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, without departing from the spirit of the invention.

Referring to the drawing: Figure 1 is` a side elevational view of a brake drum and band, a rtion of the drum being broken away to illustrate the band and shoe.

Fi re 2 is a sectional view taken on line 2-2 of Figure 1.

Referrin to the drawing in detail, the reference c aracter 5 designates the brake drum which is formed of any suitable material, and is provided with a peripheral groove 6 which is preferably V-shaped, as clearly shown by Figure 1 of the drawin The movable section of the brake embo ies a band 7 which may be connected to a suport as by means of the bracket 8, the band ing formed with suitable threaded openings indicated at 49 for accommodatin the securing screwsy 10, which are shown as aving the threaded portions thereof positioned in the threaded openings.

The band 7 is split, as clearly shown bjiY l,section to t within t Figure 1 of the drawingfthe endsthereof being spaced apart to permit of movement of the band to accomplish its purpose. A bracket member 11 is secured adjacent to one end of the brake band, which bracket member provides a support for the operating arm 12, which is pivotally connected to the bracket member 11 as at 13. Connected with the upper end of the arm 12 is the usual brake -rod 14, which may have connection with a suitable actuating mechanism not shown, for causing the arm 12 to move to operate the brake band. t

The opposite end of the band 7" is formed with a bearing member 15, through which the adjust-ing bolt 16 moves, a.coiled spring 17 being mounted on the bolt 16 to `normally holdgthe ends of the band 7 in spaced relation. A winged nut 18 is positioned on one end of the bolt 16, whereby thevends of the band may be adjusted with respect to each other. j n

Secured to the inner surface of the band 7, are the sections 19`which form the brake shoe, andas shown, these sections are'spaced` apart to permit the band 7 to flex for `moving the shoe or sections thereof into and out of engagement with the drum.

Each of these-sections 19 is'substantially triangular inv cross section to conformto the V-shaped groove in which the same operates, to insure a close engagement between, the walls of the shoe and walls of the groove in which the same moves. In order that the securing screws 10, will no't contact with the drum of the brake, the openings in the sec^ tions of the brake shoe are counter-sunk to receive the heads' of the screws as clearly shown by Figure 2 of the drawing.

It might be further statedthat these sections 19 of the brake shoe are formed preferabl of wood, but it is to be understood that 1t is within the `scope of the invention to construct the shoe or sections thereof: of any suitable material, such as compressed fibre or the like. 100

Having thus describedthe invention, what is claimed as new is f In a brake construction, a drum formed with a peripheral groove, the walls of the groove being inclined, a brake band sup-b ported adjacent to the periphery of the drum and having threaded openlngs, a brake shoe including a plurality of sections, each sec-` tionbeing substantially triangular 'in cross eperipheral groove 110 of the drum, sai shoe having openings, and my own, I have hereto axeoi my signature seciring screnlfs exteidn' (hrogh the shoe in the presence of two Witnesses. an havin t eir t l rea e en s positione V in threade openings of the brake bands, the SAMUEL B' LEITZELL 5 heads of the screws moving in the peripheral Witnesses:

groove of the drum. E. P.

Xn testimony that I claim the foregoing as GUS ULRICH, J r. 

